Cutter



May' 29, 1923.

O. DEGRENIER CUTTER Filed May lO 1920 2 Sheets-Sheet l INVENTOR OCTAVE DEGRENIER ATTORNEYS CUTTER Filed May 10 y1920 2 SheeiS-Sheet 2 INVENTOR OCTAVE DEGRENIE BY MME@ Patented li/llay 229, i923.,

rasata-a OCTAVE DEGRENIER, OF SOUTHBRIDG-E, MASSC'USETTS, LSSIGN'0RV TD AMERICAN OETICAL COMPANY, OF SOUTHBRIDG-E, MASSACHUSETTS? A VQLUNTARY ASSOCIA- TION OF lVIASSACY'IUSETTS.

Application filed May 10,

T 0 all whom it may concern:

Be it known that l, o'ravn Dico-ummm, a citizen oi the United States, residing at Southlnidge, in the county oit TWorcester and State et Massachusetts, have invented certain new and usetful improvements in Cutters, or which the 'following` is a speciication.

T his invention relates to improvements in glass cutting machines and hasparticular reference to a machine intended tor use in the cutting of' ophthalmicrlenses or similar articles.

One of the leading objects ot the present invention is the provisionvoit a novelr and improved torni of cutter which may be power actuated for the cutting operation, thus greatly increasing the possible speed ot production oi cut lenses or blanks, as well as greatly reducing the work of the operator in satisfactorily cutting the articles.

A further object ot the present invention is the provision of a novel andv improved iorm of glass cutter which shall insure a constant pressure hetween the cutting point and the article to be cut during the operation, and which shall be automatic in operation, obviating` the variations in pressure and cutting effect present when the pressure is under control oi' various individual operators.

Other objects include a simplification of construction and operation of a cutter and improvement in the arrangement ot' parts tor accessibility and holding and operating upon the work, and in the general details oic construction, as should be readily apparent by reference to the toll-owing specilication taken in connection with the accompanying' drawings, and it will be understood that l may make any modii cations in the specific details of construction shown and described within the scope oi the appended claims without departiimg` from or vriceedingv the spirit of the, invention.

Figure I represents a front view of a cutter embodying my improvements'. i'

Figure Il represents a side elevation thereof. l'

Figure lll represents a 'fragmentary sectional view through'the automatic clutch.

Figure lV representsa simil-.ar view'shoywing the clutch in disengaged relation.

Figure V representsahorizontal sectional view as on the line V-V of Figure ll. i

lo the, drawings, the numeral 1 designates CUTTER.

1920. SGYialNO. 380,190.

a table or support for my improved critter', having secured thereon the cutter base 2 provided with the upright bracket portion 3 terminating in the bearing 1- for the spindle 5. Said base is further provided with a verti-k cally shii'table table member 6 adapted to be pressed upwardly as by the lever' Tpivoted at 8 to the base and bearing at the one end against the stud 9 onthevtable and having on the other end the depending rod 10 which projects downwardly through the table 1. rlhis rod has mounted thereon'beneath the table 1 the tension spring 11, preferably enclosed within the sleeve 12 bearing at one end against the table 1 and at the other against the adjusting nut 113, which may be tightened to bring any desired tension against the rod 10 and thus through the lever 7 to `force the table 6 upward with desired pressure. This pressure may be counteracted when desired by the pressure release lever 14C pivoted to the base and having one end extending beneath the outer portion oit the lever 7 and the opposite end connected by the link 15 with a control pedal 16 so that depression of the pedal Awill rock the lever 14 raising the outer end of the lever 7 against the tension oi the` springy 11 and allow the table to move downwardly and rest against the base 2. Releasing of the tension of the pedal on the other hand will allow the spring 11 to exert its tension to force the table, upward. lt will thusy ber seen that while the pedal controls the spring tension the actual amountol'f pressure is dependent on the adjustment of the spring and is always the same irrespective of change ot operators or the like, thus differing from the systems employed in the past in which the pressure was applied by hand to theV outer end of a shift lever, such asv the lever 7, the pressure then varying with different operators or with theway the particular operator happened to` feel, being liable to be'irregular as welly as very tiring when a large amount of cutting had to bedone'.

It will'be understood' that t eI glass blank, or the like, 17 in use rests on'thet'able 6, while to operate upon the blankl I 'make'use ofthe cutter' 18 carried by the Asy'vingin'gS arm l`19 whose position lis controlled bythe engagement of its' adjustable Contact shoe 2o withal@ formefr" pattern v ai" secured on the bushing 22 mountedy in the bracket bearing il.' The swinging'cutter arr-i119 is i' carried an aim 23 rigidly secured tothe l and IV, from vwhich it will fwhen the pin 29 rides up on the control stop 37 it raises the blade spring 8O on valevell lowerend of the shaft andha'ving a steadying portion 24 above the swinging cutterV arm which rrides on theguide 25 also carried by theV bushing. The forii'ier is pref-- erably offsplit or two parttype to make it. l readily interchangeable,

being around'as in a groove at `26 on the bushing v or sleeve member 22 and secured in position Y io as by the .spring claspsA 27. To cause rotation of the'spindle andthus the carrying around of the cutter 1S I preferably mount above thebearing 4 onthe'sliaft oi' spindle 5 the clutch disc 28 having therein a` sliding pin 29k normally pressed downward by the blade spring 30 which lies in the clutch pintrack 31 in the upper face ofthe clutch disc 28. rlhis clutch pin 32 rides in a recess "in the drive pulley 33,thisrecess iyalso vholding the clutch pin spring 35 which is of just suiiicientstrength to cause-the pin .to readily drop downward and engage against the shoulder 36 yabove the pin 29.

The operation'of this clutch mechanism,

l which isiof extremely simplecharacter and may be varied if desired, should be readily.

understood `by acOinpariSQn of Figures III be seen that with the remainder of the clutch pintrack `81 so` that the pin 32 will slide freely around ety yinthe track 31, but if the member 37' be disengaged from the pin 29, the pin and its bladespring will drop solv that as the clutch pin comes along in the track 3l it will slide ldown on the blade spring and engagewith theshoulder llllhen the pin 39 is again .46. raised it will force the clutch pin upward and vdisengage the parts. Power is continuously applied during the operation of the machine to the `drive pulley 33 as by thel mediumvof the belt 38 rotating the latter continuously at a slow rate of speed, while intermittently driving the cutter as the clutch control 87 is moved into or outl of;

engagement with the pin 29.

Tocontrol' the member 37 I may suitably mount it, for example, in the bearings or bracketportionsf) onthe frame 3 with a vertical rocking portion -O, a spring il normally springing the same inwar'cb-into positionto 'engage with the pin 29 and its head having a cam or inclined portioii42 up whichthe control pin 29 may rideas the discfisturned in that direction,y thus causingautomatic disengagementv of the clutch. The flowerendof the rock member projects laterally of the clutch control `rod 48, having the thumb piece 441for pressing the rod inward to rock the member 4L()` and momentarily disv engage.' the control 87 from thev Pill 39 until the pin moves by the control, whenl it is allowed' to swing back automatically and slipped for engagement. with the endV disengage the cutter. Ifpieferred, in place vof or supplementing the controlll, there ina-y be 'a suitable operating connection 45 between the lever 14C and thel rock shaft 40,

to theend thatV when the lever is released to allow the pressure springto come in operation the spring 46 will continue to drawup the lever le, rocking the shaft after the `lens tabley has been raised by its spring pressure to temporarily disengage the mem-A bers 29 and `87, the machine then being entirely 'automaticin operation, in that the operator -m erely places the glass'in position and releases the pressure on the pedal, when the` glass is first automatically raised, pressed against the cutter, `and the cutter actuated to lmake a complete revolution,

sof

formingthe desiredcut onthe glass, after which the cutter automatically stops and it is then necessary for the operator to depress thel pedal temporarily releasing the retaining pressure and shift the stock being cut lengthwise in the caseof a. large piece of stock, or .insert anew piece again releasing the pedal when thel cutting` operation will be performed.

To retain the work in proper position on the table I preferably make use of a suit able clamp i6 to steady the work inposition on the table, although it will be understood that this may be dispensed `with, and the work held at the edges kif desired, in yview ofthe fact that the work itself does not rotate but remains stationary during the cutting operation. l,It will also be noted that while I have particularly described a power lens cutter, the principles here employed are yequally applicable in many other instances and to advantage. In this connection parl ticular mentionmight'be made of the automatic tension for insuring proper pressureand preventing undue pressurebetween the lcns and .cutting point, and also the automatic mechanism for disconnecting the cutter and the actuating vwheel therefor when the cutter reaches a givenpoint, making it possible to actuate the driving wheel or disc i 38 by hand in place of by belt power and yet the result lof automatically disconnecting the cutter from its drivingmechanism is retained when a complete cut has been made,l

preventing the cutter from `a second. timey ter, and means for relieving the pressure in the direction of the cutter as desired.

lens cutter including a frame, a cutter carried by the frame, means for automatically forcing the article to be cut with uniform pre. ure in the direction ot the cutter, means ior relieving the pressure in the direction oif the cutter as desired, and means Jor adjusting the amount ot said pressure.

d. i lens cutter including a work support, a cutter and power means for shifting the cutter over the work support.

i lens cutter including a base, a vertically shiiitable table carried by the base, means Yior automatically shi'lft'ng the table into operative position with a predetermined pressure, a cutter-'mounted above the table, and power driven means for revolving the cutter.

6. lens cutter including a base, a vertically shiiitable table carried by the base, means for automatically shifting the table into operative position with a predetermined pressure, a cutter mounted above the table, power driven means 'for revolving the cutter, and clutch mechanism Yfor limiting the operation of the cutter automatically to a single complete revolution.

7. ln a lens cutter, the combination with a base and a movable lens supporting table carried thereby, of a roel; lever 'for lifting the table into operative position, a spring for resiliently actuating the lever, and a control device for counteracting the action of the spring.

8, A lens cutter including a base, a work support, a cutter for operation in conjunction therewith, and means for holding the worlr support and cutter in opposition at a predetermined constant pressure during the cutting operation.

9. A power lens cutter including a work support and a cutter, power driven mechanism for relatively shifting said parts to perform the cutting operation, and means or automatically stopping the cutting operation at a predetermined point.

10. In a lens cutter, the combination with .a base and a movable lens supporting table so carried thereby, ci a rock lever for lifting the table into operative position, a spring for resiliently actuating the lever, a control device for counteracting the action of the spring, and means for adjusting the tension of the spring to control the pressure applied to the table.

ll. A lens cutter including a work support, bracket adjacent thereto, a` rotatable cutter bearing spindle carried by the bracket, a rotatable actuating Wheel for the spindle, and means yfor automatically disconnecting the spindle and actuating Wheel at a predetermined point in the movement ci' the cutter.

12. A cutter of the character described including a base, a shitable table carried by the base, means .for resiliently actuating the table, and pedal controlled means for shift ing the table into inoperative position.

13. fr power lens cutter including a base, a shiiitable non-rotatable table carried by the base, Aa power driven cutter mounted above the base for cooperation with the table, means for actuating the table in the direction of the cutter, and a control device operable in one direction to actuate the cutter and in the opposite direction to move the table into inoperative position.

ld. A device of the character described including a. base, a lens supporting table carried by the base, a po-wer cutter actuatable over the base, a trip controlling the movement oia the cutter, and independent means 'lor manually and lor automatically actuating the trip.

l5. A device of the character described including a base, a vertically slidable table carried by the base, a rock lever bearing at one end against the table for raising the same, pressure mechanism engaging the opposite end oft the lever for shitting the lever and thus the table into operative position, a second rock lever carried by the base and having one end in position to engage the first mentioned roel: lever and move it against the action of its pressure mechanism, and a cam device carried by the opposite end of the lever, substantially as and for the purpose described.

In testimony whereof I have aliiXed my signature, in presence ot two witnesses.

OGTAVE DEGRENIER.

`Witnesses ALICE G. HAsKnLL, ESTHER M. Lernen. 

